/*!	 valuenoderemove.cpp
**	 Template File
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2008 Chris Moore
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#include <synfig/general.h>

#include "valuenoderemove.h"
#include <synfigapp/canvasinterface.h>

#include <synfigapp/localization.h>

#endif

using namespace std;
using namespace etl;
using namespace synfig;
using namespace synfigapp;
using namespace Action;

ACTION_INIT_NO_GET_LOCAL_NAME(Action::ValueNodeRemove);
ACTION_SET_NAME(Action::ValueNodeRemove, "ValueNodeRemove");
ACTION_SET_LOCAL_NAME(Action::ValueNodeRemove, N_("Unexport"));
ACTION_SET_TASK(Action::ValueNodeRemove, "unexport");
ACTION_SET_CATEGORY(Action::ValueNodeRemove, Action::CATEGORY_VALUENODE);
ACTION_SET_PRIORITY(Action::ValueNodeRemove, 0);
ACTION_SET_VERSION(Action::ValueNodeRemove, "0.0");
ACTION_SET_CVS_ID(Action::ValueNodeRemove, "$Id$");

Action::ValueNodeRemove::ValueNodeRemove()
{
}

synfig::String
Action::ValueNodeRemove::get_local_name()const
{
    // TRANSLATORS: This is used in the 'history' dialog when a ValueNode is unexported.
    return strprintf(_("Unexport '%s'"), old_name.c_str());
}

Action::ParamVocab
Action::ValueNodeRemove::get_param_vocab()
{
    ParamVocab ret(Action::CanvasSpecific::get_param_vocab());

    ret.push_back(ParamDesc("value_node", Param::TYPE_VALUENODE)
                  .set_local_name(_("ValueNode"))
                 );

    return ret;
}

bool
Action::ValueNodeRemove::is_candidate(const ParamList &x)
{
    if (candidate_check(get_param_vocab(), x)) {
        ValueNode::Handle value_node = x.find("value_node")->second.get_value_node();

        if (!value_node->is_exported()) {
            return false;
        }

//			return false;
        return true;
    }

    return false;
}

bool
Action::ValueNodeRemove::set_param(const synfig::String& name, const Action::Param &param)
{
    if (name == "value_node" && param.get_type() == Param::TYPE_VALUENODE) {
        value_node = param.get_value_node();

        if (value_node && !value_node->is_exported()) {
            synfig::error("Action::ValueNodeRemove::set_param(): ValueBase node not exported!");
            value_node = 0;
        }

        return (bool)value_node;
    }

    return Action::CanvasSpecific::set_param(name, param);
}

bool
Action::ValueNodeRemove::is_ready()const
{
    if (!value_node) {
        synfig::error("Action::ValueNodeRemove::is_ready(): ValueNode not set!");
    }

    if (!value_node) {
        return false;
    }

    return Action::CanvasSpecific::is_ready();
}

void
Action::ValueNodeRemove::perform()
{
//		throw Error(_("ValueNode is still being used by something"));

    old_name = value_node->get_id();
    parent_canvas = value_node->get_parent_canvas();
    parent_canvas->remove_value_node(value_node, false);

    if (get_canvas_interface()) {
        get_canvas_interface()->signal_value_node_deleted()(value_node);
    }


}

void
Action::ValueNodeRemove::undo()
{
    parent_canvas->add_value_node(value_node, old_name);

    if (get_canvas_interface()) {
        get_canvas_interface()->signal_value_node_added()(value_node);
    }


}